31323331129 has 16 divisors (see below), whose sum is σ = 32455575040. Its totient is φ = 30207038400.

The previous prime is 31323331051. The next prime is 31323331141. The reversal of 31323331129 is 92113332313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31323331129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31323331129.

It is not an unprimeable number, because it can be changed into a prime (31323331159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2580727 + ... + 2592835.

It is an arithmetic number, because the mean of its divisors is an integer number (2028473440).

Almost surely, 2^31323331129 is an apocalyptic number.

It is an amenable number.

31323331129 is a deficient number, since it is larger than the sum of its proper divisors (1132243911).

31323331129 is a wasteful number, since it uses less digits than its factorization.

31323331129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12760.

The product of its digits is 8748, while the sum is 31.

The spelling of 31323331129 in words is "thirty-one billion, three hundred twenty-three million, three hundred thirty-one thousand, one hundred twenty-nine".